1. What are the characteristics of a normal distribution? For Exercises 6 through 25, find the area under the standard normal distribution curve. 2. Why is the standard normal distribution important in statistical analysis? 6. Between z = 0 and z = 1.89 7. Between z = 0 and z = 0.75 3. What is the total area under the standard normal distribution curve? 8. Between z = 0 and z = -0.46 4. What percentage of the area falls below the mean? 9. Between z = 0 and z = -2.07 Above the mean? 10. To the right of z = 2.11 5. About what percentage of the area under the normal 11. To the right of z = 0.23 distribution curve falls within 1 standard deviation 12. To the left of z = -0.75 above and below the mean? 2 standard deviations? 3 standard deviations? 13. To the left of z = -1.43